There are other function issues except screen replacement we can fix.
No Back Light of the Screen
The screen no display and doesn’t cracked either,maybe there is the back light issue
Touch Screen Unresponsive
Screen doesn’t respond after your device was dropped or ever dropped.
Water ever because of water damage,physical damage, temperature or humidity
Battery Drains fast or couldn’t hold power
Camera shakes or un-focus
Speaker Grey, no sound or sound lower than normal
Power button,home button volume and silent button
back cover broken? what ever phone or camera
Can’t turn on